Flashing A Stone Chimney On A Metal Roof

Rivet the pan flashing to the sidewall flashing.

Flashing a stone chimney on a metal roof. In any case the roof deck may move relative to the masonry chimney and good flashing details anticipate. Chimney boot for a metal roof. Install two layers of butyl tape sealant under perimeter of pan flashing. Bend 1 side of the flashing around 1 edge of the chimney.

A typical roof to chimney flashing will consist of two parts. Apply sealant to sidewall flashing where pan flashing tabs will overlap. Comprised of step tins rubber or some other type of membrane. Flashing is often made of metal which is the norm on a metal roof.

On each end of the pan flashing cut about 1 1 2 in. Don t use aluminum flashing for this situation as the masonry will corrode the aluminum. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim. Use tin snips to cut the bent base flashing that you ordered from the sheet metal shop.

Round metal chimneys will be flashed much like pipes. And the upper counterflashing. Allowing for movement chimneys have a foundation which may be independent from the house. It s typically made of thin pieces of impenetrable material which inhibits water leaking around the chimney preserving the building from moisture and mold issues.

The first part is a one piece pan that is bent at a right angle and laid with one leg against the chimney and the other on the roof. Cut the flashing to fit along the chimney s front. Let s focus on masonry chimneys since they are the most challenging and one of the most common. Each leg should be about 6 in.

Cut the base flashing. Pan flashing should extend at least 12 inches up the roof plane. The lower step flashing. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.

Flashing is a method of weatherproofing the base of a chimney.